§ 13.16.130. Materials for construction—Specifications for pipe and installation thereof.

A.

All sanitary sewers shall be constructed of:

1.

Extra-strength vitrified clay pipe meeting A.S.T.M. Specification C-200-44T or latest revision thereto;

2.

Cast-iron pipe conforming with the requirements of American Standard Specifications A21.6 — 1952 or A21.8 — 1952 or latest revision thereto;

3.

Hard temper copper tube type DWV or heavier;

4.

ABS or PUC, DWV plastic pipe; or

5.

Any other material approved in the then current National Standard Plumbing Code.

B.

All sewer pipe installed shall be of adequate strength to withstand the trench backload conditions, including a twenty-(20) ton live wheel load. Where soil conditions warrant and where groundwater is present, a screened gravel base, at least twelve (12) inches thick shall be placed in the trench bottom to provide adequate support for the pipe; and where excessively deep or very shallow cuts are encountered in construction, the pipe shall be encased in full concrete cradle to provide the required strength. Concrete cradle shall be installed where shown on the plans or where ordered by inspector. Concrete used shall have a minimum compressive stress of two thousand (2,000) pounds per square inch.

(Prior code § 86-13)